Insole.



No. 782,928. PATENTED FEB. 21, 1905. H. N. SPAULDING. INSOLE.

- APPLICATION IILBD FEB. 26, 1801.

UNITED STATES Patented February 21, 1905.

PATENT OFFICE.

SAOHUSETTS.

MASSACHUSETTS, OF BOSTON, MAS- INSOLE.

SPECIFICATIONforming part of Letters Patent No. 782,928, dated February 21, 1905. Application filed February 26, 1901. Serial No. 48,931.

T 0 all whom it may concern:

Be itknown thatI, HUNTLEY N. SPAULDING, a citizen of the United States, residing at Townsend Harbor, in the county of Middlesex and State of Massachusetts, have invented hold the stitches of the inseam which unites it to the upper or to the upper and welt of the boot or shoe. One of these processes consists in cutting a shaving from the edge of the sole and in cutting a channel in the face of the sole, whereby the stitches of the inseam are received in the channel and pass through the material of the insole between the bottom of the channel and the shoulder formed by removing the shaving from the edge of the sole. The other process consists in splitting the edge of the blank and turning up a portion of the split edge to form a lip for receiving the stitches of the inseam.

In the manufacture of insoles according to the first-mentioned process high-grade stock must be employed in order that the sole-blank may be properly channeled and that the material through which the stitches of the inseam pass, technically known as the between substance, may be of the requisite strength and tenacity.

In the manufacture of insoles according to the second mentioned process an inferior grade of sole-leather can be used, especially when the sole is provided with a strengthening-piece of canvas folded over the lip and cemented to the body of the sole and to the edge or feather, as is the common practice.

Owing to the great demand for sole-leather and to the successful utilization of the inferiorgrades in the manufacture of insoles according to the second process above referred to the price of inferior stock is nearly equal to that of the higher grades. Attempts have accordingly been made to utilize substances other than sole-leather in the manufacture of insoles, such as leather board, leatheroid, and the like. These attempts have, however, been unsuccessful heretofore, as it was found to be impossible to successfully channel or split the edge of asole-blank of such material. A blank of such material has a laminated structure, being composed of a number of layers or small pieces or scales, and any-attempt to channelor split the edge of the blank results in the tearing apart of these layers, so that the blank is split or torn and rendered unfit for use as an insole.

The object of my invention is to provide a serviceable insole of laminated material' such as leather-board, leatheroid, and the like; and with this object in view my invention consists in the insole hereinafter described and claimed.

An insole embodying my invention is illustrated in the accompanying drawingsin three stages of its manufacture.

Referring to the drawings, Figure 1 is a cross-section of a sole-blank of laminated material-such as leather-board, leatheroid, and the like-after having been subjected to the first step in the process of making an insole. Fig. 2 is a section similar to Fig. l of the blank at the end of the second step in the process of manufacture, and Fig. 3 is a section similar to Figs. 1 and 2 of the completed sole at the end of the third stepin the process of manufacture.

The process of making the insole consists in providing the sole-blank witha line of stitches passing through the blank near the edge thereof, splitting the edge of the blank, and turning up a portion of the edge to form a lip.

In the drawings, 1 designates a sole-blank of laminated material, such as leather-board, leatheroid, and the like. If it is attempted to split the edge of this blank, the layers of which the blank is composed will be torn apart, and the split will extend into the blank beyond the splitting-knife and at certain points may extend to the surface of the blank. The

blank will thus be so weakened as to render it unfit for use as an insole. Moreover, the distance to which the split extends into the blank will vary at difierent points, so that it will be impossible to turn up a portion of the split edge to form a lip extending around the blank at a uniform distance from the edge. An attempt to turn up and set a portion of the edge to form the lip will also have a tendency to tear the layers of the material apart. In order to avoid these objectionable results and enable the edge of the blank to be split and a portion thereof to be turned up to form a lip, I provide the blank with a line of stitches 2, which pass through the blank near the edge at such a distance therefrom that after the edge of the blank has been split and a portion thereof turned up to form a lip the stitches will be located at the base of the lip. After the blank has been provided with the line of stitches 2 the sole is finished by splitting the edge, as at 3, Fig. 2, and turning up a portion thereof to form a lip 41., Fig. 3, the portion of the edge which is not turned up forming the feather 5. The line of stitches 2 effectually prevents the layers of the blank tearingapartand enables the blank to be converted into a strong and serviceable insole.

The height of the upturned lip is determined by the distance from the edge of the sole of the line of stitches 2, which pass through the base of the lip and feather in the completed sole, as shown in Fig. 3. The insole (shown in Fig. 3) may be provided with a strengthening-piece of canvas folded over the lip and cemented to the sole in the usual manner, or it can be used without such strengthening-piece.

So far as 1 am advised as to the state of the art the insole which I have described above as embodying my invention is the first lipped or channeled insole in the manufacture of which laminated material such as leatherboard, leatheroid, and the like-has been successfully utilized.

Having thus described my invention, I claim as new and desire to secure by Letters Patent of the United States-- An insole of laminated material, as leatherboard, leatheroid and the like, consisting of an integral sole-blank of said material, the edge of which has been split and a portion thereof turned up to form a lip and a line of stitches passing through the sole at the base of the lip and acting to limit the distance to which the split extends into the blank, substantially as described.

In testimony whereof Iaffix my signaturein presence of two witnesses.

HUNTLEY N. SPAULDING. Witnesses:

HORACE VAN EVEREN, FRED O, FIsH. 

